Pearson, D;
Watson, P;
Cheng, P;
Le Pelley, M;
(2019)
Overt attentional capture by reward-related stimuli overcomes inhibitory suppression.
PsyArXiv
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Abstract
Salient-but-irrelevant distractors can automatically capture attention and eye-gaze in visual search. However, recent findings have suggested that attention to salient-but-irrelevant stimuli can be suppressed when observers use a specific target template to guide their search (i.e., feature search). Increasingly, evidence suggests that attentional selection is influenced by factors other than the physical salience of a stimulus and the observer’s goals. For instance, pairing a stimulus with reward has been shown to increase the extent to which it captures attention and gaze (as though it has become more physically salient), even when such capture has negative consequences for the observer. We investigated whether capture by reward can be suppressed in the same way as capture by physical salience using eye-tracking with a rewarded visual search task. When participants were encouraged to use feature search, attention to a distractor paired with relatively small reward was suppressed. By contrast, attention was captured by a distractor paired with large reward, even when such capture resulted in the loss of large reward. These findings suggest that reward-related stimuli are given special priority to the visual attention system and have implications for our understanding of real-world biases to reward-related stimuli, such as those seen in addiction.</p>
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